Vedanta Ltd. announces a new order win

Verdict: The USD 600 million Gamsberg Phase II investment is largely already spent. The detailed project schedule shows approximately USD 483 million deployed through FY26, leaving about USD 112 million for completion and commissioning as of 31 March 2026. With the project 93.6% complete and full ramp-up targeted in H1 FY27, the remaining cash requirement is primarily a FY27 issue; no separate FY28 payment schedule has been disclosed. ^{[1] [2]}

Gamsberg Phase II phasing

† The company’s headline announcement refers to “nearly USD 600 million”; the detailed project table records approved capex of USD 595 million. ^{[3] [1]}

The residual USD 112 million is approximately Rs 1,051 Crores using the company presentation’s USD-INR rate of Rs 93.87. ^[1] The exact split between FY27 and FY28 is not provided, although the project was targeted for full ramp-up in H1 FY27. ^[2]

Effect on deleveraging

• Vedanta reported consolidated net debt of Rs 53,254 Crores at FY26-end, broadly flat year-on-year because higher capex, working-capital investment and shareholder returns offset operating cash flow and strategic actions. ^[2]
• The residual Gamsberg spend is therefore equivalent to roughly 2.0% of that FY26 net-debt base, on a simple cash-outflow comparison. This is a derived measure, not a forecast of the change in reported net debt.
• Management’s FY27 growth-capex programme is Rs 17,000–19,000 Crores, while pre-capex free cash flow was around Rs 26,000 Crores and management said the capex programme is primarily funded through internal accruals. ^{[2] [4]} The remaining Gamsberg spend would represent approximately 5.5–6.2% of the FY27 growth-capex envelope, derived from these figures.
• The explicit leverage objective is to keep VEDL’s net debt/EBITDA below 1.0x; the FY26 presentation showed 0.95x. ^[1] Management has also stated an intention to deleverage at group level. ^[2]

Implication: Gamsberg Phase II should modestly reduce the cash available for consolidated debt reduction in FY27, but it is not a fresh USD 600 million drag on FY27–FY28 deleveraging. The larger determinant remains the overall FY27 capex programme, working capital, dividends and operating cash generation. A precise impact against a rupee debt-reduction target cannot be calculated because no separate absolute consolidated net-debt reduction targets for FY27 and FY28, nor a year-wise Gamsberg payment schedule, are stated.

Current capacity: Vedanta’s South African zinc operations are stated to have reached 500,000 tonnes per annum of zinc-in-concentrate capacity, following the Gamsberg Phase II expansion, described as a doubling of capacity. ^[3]

Asset-level disclosure is less complete:

• Gamsberg: The pre-expansion MIC capacity was described as 300,000 tonnes per annum, with a 200,000-tonne-per-annum Phase II concentrator, implying a post-expansion capacity of approximately 500,000 tonnes per annum. ^[2]
• Black Mountain Mining: A separate annual capacity figure was not disclosed in the cited company materials. Therefore, the 500,000-tonne figure should be treated as the stated capacity for the South African zinc operations, principally reflecting Gamsberg, rather than as a separately reconciled Gamsberg-plus-Black-Mountain total.

Commissioning timeline

The projected schedule for Gamsberg Phase II was:

• March 2026: Project approximately 93.6% complete. ^[2]
• End-June 2026: Target for C2 completion. ^[2]
• Second week of July 2026: Target for ore charging. ^[2]
• Q2 FY27 / H1 FY27: Target for commissioning and full ramp-up. ^[1]

The subsequent October 2026 company announcement stated that the expansion had been inaugurated and that South African annual capacity had reached 500,000 tonnes, so the earlier Q2 FY27 commissioning target was subsequently presented as achieved. ^[3]

Important distinction: the Phase II project was also described as doubling Gamsberg mining capacity from 4 MTPA to 8 MTPA, while adding 200 KTPA of concentrator capacity. Mining throughput and zinc-in-concentrate output are different measures, so the 4-to-8 MTPA mining expansion should not be read as 8 million tonnes of zinc production. ^[2]

A precise per-tonne cost comparison is not supported by the disclosed figures. Vedanta’s presentation identifies Gamsberg’s metric as “cost of production with TcRc,” but the cited extract does not preserve a complete, unit-labelled Gamsberg cost figure; a comparable HZL cost-per-tonne figure is also not reported. Therefore, it would be unsupported to conclude that South African production is definitively cheaper or more expensive than HZL on the current evidence. ^[5]

Margin impact

The strategic direction is margin-positive at steady state, but the magnitude is unquantified:

• Gamsberg Phase II is intended to double South African zinc capacity to approximately 500,000 tonnes annually, backed by an investment of nearly USD 600 million. ^[3]
• Higher throughput should improve fixed-cost absorption and operating leverage if the expanded mine and concentrator ramp up efficiently. This is an analyst inference, not quantified company guidance.
• The benefit will not necessarily flow through immediately: commissioning, ramp-up inefficiencies, incremental depreciation and the distinction between concentrate economics at Gamsberg and integrated zinc-metal economics at HZL could dilute the initial margin benefit.
• HZL’s consolidated EBITDA margin was 60.9% in Q1 FY27 and 56.7% for FY26, but these are HZL company-level margins—not a disclosed benchmark for the combined Vedanta Zinc segment. ^{[6] [7]}

Bottom line: the expansion should be structurally margin-accretive once fully ramped, assuming Gamsberg maintains competitive unit costs, but the available disclosures do not establish the South African-versus-HZL cost gap or provide a forecast increase in the overall Zinc segment’s EBITDA margin.